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Seismic Performance Improvement of Liquid Storage Tank using Lead Rubber Bearing

납고무받침을 이용한 액체저장탱크 내진성능향상

Kim, Hu-Seung;Oh, Ju;Jung, Hie-Young
김후승;오주;정희영

  • Received : 2018.11.20
  • Accepted : 2019.05.08
  • Published : 2019.06.01

Abstract

Recently, interest in the seismic safety of structures is rising in South Korea due to the occurrences of earthquakes of 5.0 or greater magnitudes such as Gyeongju earthquake (September 2016) and Pohang earthquake (November 2017). In particular, the importance of living facilities that cause human injuries and property losses is more emphasized. Representative living facilities include gas and oil storage facilities and water tanks. In this study, the seismic performance of liquid storage tanks is improved by applying the lead rubber bearing, which is a seismic isolation method. The lead rubber bearing was designed considering the foundation of liquid storage tanks, and the general properties of the lead rubber bearing were verified through compression and shear tests using fabricated specimens. Furthermore, the behaviors of liquid storage tanks according to seismic and non-seismic isolations were analyzed through durability test, shaking table test and finite element analysis using ANSYS.

Keywords

Lead rubber bearing;Seismic performance improvement;Liquid storage tank;Shaking table test;Finite element analysis